[JWT] Get In-App Messages from Server

[nan-li]

Description

One Line Summary

Update fetch IAMs to use the new endpoint, support JWT, and include the alias.

Details

Motivation

Fetch IAMs

Scope

Fetch IAMs

Future Work

• The user and subscription model's relationship should be improved. Should the subscription model own a reference to its identity model that owns it?
• The retrying fetch IAMs can be improved and less hacky.

Testing

Unit testing

No changes

Manual testing

New install with JWT on and off, misc scenarios tested

• Works under normal flows with connection.
• With JWT on, receive a 401 from fetch IAM. Then update the jwt token, and see the fetch that is immediately retried.
• With JWT off, login to a new user with network turned off, and start a new session. Fetch IAM is blocked by null onesignal ID. Turn data on and the user is created. The fetch IAM is immediately retried.

Affected code checklist

• [ ] Notifications
  • [ ] Display
  • [ ] Open
  • [ ] Push Processing
  • [ ] Confirm Deliveries
• [ ] Outcomes
• [ ] Sessions
• [x] In-App Messaging
• [ ] REST API requests
• [ ] Public API changes

Checklist

Overview

• [ ] I have filled out all REQUIRED sections above
• [ ] PR does one thing
  • If it is hard to explain how any codes changes are related to each other then it most likely needs to be more than one PR
• [ ] Any Public API changes are explained in the PR details and conform to existing APIs

Testing

• [ ] I have included test coverage for these changes, or explained why they are not needed
• [ ] All automated tests pass, or I explained why that is not possible
• [ ] I have personally tested this on my device, or explained why that is not possible

Final pass

• [ ] Code is as readable as possible.
  • Simplify with less code, followed by splitting up code into well named functions and variables, followed by adding comments to the code.
• [ ] I have reviewed this PR myself, ensuring it meets each checklist item
  • WIP (Work In Progress) is ok, but explain what is still in progress and what you would like feedback on. Start the PR title with "WIP" to indicate this.

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This change is 

[nan-li]

swiftlint file too long